It differs from liberal democracy in that it is not about the method of selecting government.
[1] The journalist and scholar Fareed Zakaria explains that constitutional liberalism "is about government's goals.
It refers to the tradition, deep in Western history, that seeks to protect an individual's autonomy and dignity against coercion, whatever the source—state, church, or society".
[2] In a constitutionally liberal state, a liberal market is regulated and protected at the level of the constitution and so trade is mostly free, but not entirely unhampered.
[3] Throughout history, democracy is becoming more common around the world, but it has been in decline for the last 13 years.